Li ce ns ed C op y P ua n M s N or ha ya ti, P et ro lia m N as io na l B er ha d 43 97 00 0, 0 1 M ar ch 2 00 5, U nc on tr ol le d C op y, ( c) B S I BRITISH STANDARD BS EN 1780 1 2002 Aluminium and[.]
Trang 1British Standard
A single copy of this British Standard is licensed to
Puan Ms Norhayati
01 March 2005
This is an uncontrolled copy Ensure use of the most current version of this document by searching British Standards Online at bsonline.techindex.co.uk
Trang 2BRITISH STANDARD BS EN
1780-1:2002
Aluminium and
aluminium alloys —
Designation of alloyed
aluminium ingots for
remelting, master
alloys and castings —
Part 1: Numerical designation system
The European Standard EN 1780-1:2002 has the status of a
British Standard
ICS 77.150.10
12&23<,1*:,7+287%6,3(50,66,21(;&(37$63(50,77('%<&23<5,*+7/$:
Trang 3BS EN 1780-1:2002
This British Standard, having
been prepared under the
direction of the Engineering
Sector Policy and Strategy
Committee, was published
under the authority of the
Standards Policy and Strategy
Committee on 30 October 2002
© BSI 30 October 2002
ISBN 0 580 40656 3
National foreword
This British Standard is the official English language version of
EN 1780-1:2002 It supersedes BS EN 1780-1:1997 which is withdrawn The UK participation in its preparation was entrusted to Technical Committee NFE/35, Light metals and their alloys, which has the responsibility to:
A list of organizations represented on this committee can be obtained on request to its secretary
Cross-references
The British Standards which implement international or European
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under the section entitled “International Standards Correspondence Index”, or
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Summary of pages
This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover
The BSI copyright date displayed in this document indicates when the document was last issued
Amendments issued since publication
Amd No Date Comments
Trang 4EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
EN 1780-1
October 2002
ICS 77.150.10 Supersedes EN 1780-1:2002
English version
Aluminium and aluminium alloys - Designation of alloyed aluminium ingots for remelting, master alloys and castings - Part
1: Numerical designation system
Aluminium et alliages d'aluminium - Système de désignation applicable aux lingots pour refusion en aluminium allié, aux alliages-mères et aux produits moulés
- Partie 1: Système de désignation numérique
Aluminium und Aluminiumlegierungen - Bezeichnung von legiertem Aluminium in Masseln, Vorlegierungen und Gussstücken - Teil 1: Numerisches Bezeichnungssystem
This European Standard was approved by CEN on 2 September 2002.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
C O M I T É E U R O P É E N D E N O R M A L I S A T I O N
E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved
worldwide for CEN national Members.
Ref No EN 1780-1:2002 E
Trang 5EN 1780-1:2002 (E)
Contents
page
Foreword 3
1 Scope 4
2 Normative references 4
3 Basis of codification 4
4 Five-figure designation system 4
4.1 Aluminium alloys ingot and castings 4
4.2 Master alloys 6
Bibliography 7
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3
Foreword
This document (EN 1780-1:2002) has been prepared by Technical Committee CEN /TC 132, "Aluminium and aluminium alloys", the secretariat of which is held by AFNOR
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by April 2003, and conflicting national standards shall be withdrawn at the latest by April 2003
Within its programme of work, Technical Committee CEN/TC 132 entrusted CEN/TC 132/WG 1 "Liquid metal, unalloyed and alloyed ingots" to prepare the following standard:
EN 1780-1, Aluminium and aluminium alloys – Designation of alloyed aluminium ingots for remelting, master alloys and castings – Part 1 : Numerical designation system
This document supersedes EN 1780-1:1996 "Aluminium and aluminium alloys – Designation of unalloyed and alloyed aluminium ingots for remelting, master alloys and castings – Part 1 : Numerical designation system"
In this revised edition, unalloyed aluminium ingots have been removed from the scope and provisions for unalloyed aluminium ingots have been deleted
The provisions about the writing rules of unalloyed aluminium have been transferred into the revised version of
EN 576
This European Standard EN 1780, “Aluminium and aluminium alloys – Designation of alloyed aluminium ingots for remelting, master alloys and castings”, comprises of the following parts:
Part 1 : Numerical designation system
Part 2 : Chemical symbol based designation system
Part 3 : Writing rules for chemical composition
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom
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1 Scope
This European Standard specifies a five-figure numerical designation system for aluminium alloys and master alloys as specified in the relevant European Standards It applies to ingots for remelting and to castings for all applications including aerospace
A designation system for unalloyed aluminium is specified in EN 576
An alternative chemical symbol based designation system is specified in EN 1780-2 The writing rules for chemical composition are specified in EN 1780-3
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications These normative references are cited at the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision For undated references the latest edition of the publication referred to applies (including amendments)
EN 2032-1, Aerospace series – Metallic materials – Part 1 : Conventional designation
3 Basis of codification
The designation shall be constituted successively by :
a) the prefix EN followed by a blank space ;
b) the letter A representing aluminium ;
c) a letter representing the form of the product :
the letter B representing alloyed aluminium ingots for remelting ; or
C representing castings ; or
M representing master alloys ;
d) a hyphen ;
e) five figures representing the alloy composition limits
EXAMPLE 1 EN AB-44000 EXAMPLE 2EN AM-91400
The prefix letters of alloys for aerospace applications are different from those above and are specified in
EN 2032-1
4 Five-figure designation system
4.1 Aluminium alloys ingot and castings
For a given alloy, ingots and castings shall have the same numerical designation
The first of the five figures in the designation shall indicate the major alloying elements as follows :
copper: 2XXXX ;
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5
silicon : 4XXXX ;
magnesium : 5XXXX ;
zinc : 7XXXX
The second of the five figures in the designation shall indicate the alloy group as follows :
2 1 XXX: Al Cu ;
4 1 XXX : Al SiMgTi ;
4 2 XXX: Al Si7Mg ;
4 3 XXX : Al Si10Mg ;
4 4 XXX : Al Si ;
4 5 XXX : Al Si5Cu ;
4 6 XXX : Al Si9Cu ;
4 7 XXX : Al Si(Cu) ;
4 8 XXX: Al SiCuNiMg ;
5 1 XXX : Al Mg ;
7 1 XXX : Al ZnMg
The third figure is arbitrary
The fourth figure is generally 0
The fifth figure shall be 0, except for aerospace applications
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4.2 Master alloys
The first of the five figures in the designation system shall be the number 9
The second and third figures shall represent the atomic number of the main element
EXAMPLE 1 05 for boron ;
EXAMPLE 2 14 for silicon ;
EXAMPLE 3 29 for copper
The last two figures shall be chronological numbers, but for the fifth figure :
an even figure is reserved for a master alloy with low level of impurities ; or
an odd figure is reserved for a master alloy with high level of impurities
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7
Bibliography
[1] EN 576, Aluminium and aluminium alloys – Unalloyed aluminium ingots for remelting – Specifications [2] EN 1780-2, Aluminium and aluminium alloys – Designation of alloyed aluminium ingots for remelting, master alloys and castings – Part 2 : Chemical symbol based designation system
[3] EN 1780-3, Aluminium and aluminium alloys – Designation of alloyed aluminium ingots for remelting, master alloys and castings – Part 3 : Writing rules for chemical composition
Trang 11BS EN
1780-1:2002
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